Subtract 90/63 from 6/9
1st number: 6/9, 2nd number: 1 27/63
6/9 - 90/63 is -16/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
6/9 = 6 × 7/9 × 7 = 42/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
90/63 = 90 × 1/63 × 1 = 90/63 - Subtract the two like fractions:
42/63 - 90/63 = 42 - 90/63 = -48/63 - After reducing the fraction, the answer is -16/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/9-90/63 6/18-90/63 18/9-90/63 6/27-90/63 30/9-90/63 6/45-90/63 42/9-90/63 6/63-90/63